CN103537194B - Gaseous diffuser - Google Patents
Gaseous diffuser Download PDFInfo
- Publication number
- CN103537194B CN103537194B CN201310308707.4A CN201310308707A CN103537194B CN 103537194 B CN103537194 B CN 103537194B CN 201310308707 A CN201310308707 A CN 201310308707A CN 103537194 B CN103537194 B CN 103537194B
- Authority
- CN
- China
- Prior art keywords
- circular arc
- breather pipe
- hydrodynamic diameter
- equal
- gaseous diffuser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
- B01F23/23105—Arrangement or manipulation of the gas bubbling devices
- B01F23/2312—Diffusers
- B01F23/23121—Diffusers having injection means, e.g. nozzles with circumferential outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
- B01F23/23105—Arrangement or manipulation of the gas bubbling devices
- B01F23/2312—Diffusers
- B01F23/23126—Diffusers characterised by the shape of the diffuser element
- B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
Abstract
The breather pipe grid that gaseous diffuser separates in being included in shared horizontal plane and is arranged parallel to each other, and the manifold with breather pipe fluid communication.Given breather pipe (12) includes: extend and define the length (L) of axle (Z) between the two ends, hydrodynamic diameter (Dh), define the oval cross section of the perpendicular comprising vertical axes (Y) and the trunnion axis (X) passing crosswise center (C), it is vertical with axle (Z), the excircle being limited by first paragraph circular arc (20) and second segment circular arc (22).Multiple (N) discharge orifice separating along length (L) on four or more diverse location around second segment circular arc in sector, and multiple (M) osculum (34) separating along length (L) in first paragraph circular arc;Second segment circular arc (22) comprises four nonoverlapping 15 ° of sectors.
Description
Technical field
The present invention relates to gaseous diffuser, be especially suitable for used along with immersed membrane filtration systems or be used as its portion
The gaseous diffuser of part.
Background technology
The performance of pressure-actuated membrane filtration system can because of on film surface accumulation of mud and significantly reduce.This phenomenon is led to
It is often referred to as " incrustation ".In order to mitigate incrustation, many immersed membrane filtration systems include that the gas being positioned under film expands
Dissipate device (being also referred to as " gas distributor " or " breather ").Operationally, gas (such as air) bubble is from diffuser
Discharge, run up, the friction film surface when they rise.The example of this system is at US the 5248424th, US the 5482625th,
US 6511602、US 6555005、US 2010/0224556、US 2011/0049038、US 61/526539、CN
It is described in 101893164.Owing to the generation of bubble is energy-intensive, so needing more efficient gaseous diffuser
Design.
Content of the invention
The present invention includes improved gaseous diffuser, the gas being wherein associated with each discharge orifice (discharge hole)
Rate of flow of fluid ratio is more consistent, including be positioned at around breather pipe on diverse location, hole that hydrodynamic diameter is different.At one preferably
In embodiment, breather pipe grid that gaseous diffuser separates in being included in shared horizontal plane and is arranged parallel to each other, Yi Jiyu
The manifold of breather pipe fluid communication.Given breather pipe (12) includes: extend and define the length of axle (Z) between the two endpoints
(L)；Hydrodynamic diameter (Dh)；Definition comprises the perpendicular of vertical axes (Y) and the trunnion axis (X) passing crosswise center (C)
Oval cross section, it is vertical with axle (Z)；The excircle being limited by first paragraph circular arc (20) and second segment circular arc (22): first
Section circular arc is formed by being positioned at the 30 ° of circular arcs divided equally below (X) axle and Bei (Y) axle；Second segment circular arc by with first paragraph circular arc (20)
Nonoverlapping 330 ° of circular arcs composition.In sector on four or more diverse locations around second segment circular arc along length
(L) multiple (N) discharge orifice separating, and separate multiple (M) osculum along length (L) in first paragraph circular arc
(drainage hole)；
Second segment circular arc comprises four nonoverlapping 15 ° of sectors, and each sector comprises:
I) at least 10 minimum hydrodynamic diameter (dmin) be equal to or more than 0.001m discharge orifice；
Ii) it is equal to all discharge orifices in rice measurement, fan-shaped along the value (y) of the mean place of Y-axis；With
Iii) it is equal to the interior quadruplicate value of all discharge orifices hydrodynamic diameter mean value (d) (F) rice measurement, fan-shaped；
Wherein any two be applicable to four sectors for the following relation:
Abs[1-Fi/Fii+2.6x108m-5N2(yii-yi)Fi)]≤0.5
Wherein " i " and " ii " refers to the higher and relatively low sector along Y-axis respectively.
Accompanying drawing briefly describes
Fig. 1 is the perspective view of gaseous diffuser, including the manifold with breather pipe grid fluid communication；
Fig. 2 is the perspective view of Fig. 1 breather pipe；
Fig. 3 be in Fig. 2 3-3 along the line taken the cross-sectional view strength of breather pipe.
Detailed description of the invention
The present invention includes multiple embodiment, had both included gaseous diffuser, and had also included the immersion containing gaseous diffuser
Membrane filtration system.Immersed membrane filtration systems is not particularly limited, and this system includes the patent quoted in background technology
Doughnut described in file and Flat Membrane configuration.
Referring to the drawings, on (10) that are shown in Fig. 1 that the embodiment of a gaseous diffuser is total, including in shared level
The breather pipe that separates in face and be arranged parallel to each other (the 12nd, 12 ', 12 ", 12 " ') grid and the collection with described breather pipe fluid communication
Flow tube or " manifold " (14).Although being not particularly limited, but the breather pipe quantity of each manifold is preferably 2 to 24.Building material
It is not particularly limited, including metal (such as steel, aluminium etc.) and plastics (such as polyvinyl chloride, polypropylene, polyethylene etc.).Breather pipe
Welding and viscose glue can be used to be connected with each other with manifold, as common in this area.
Single breather pipe (12) has and extends between two ends (the 16th, 18) and define axle (Z) is preferably 0.5 to 3 meter
Length (L).Breather pipe (12) has one and defines the perpendicular of the vertical axes (Y) comprising to pass crosswise center (C) and trunnion axis (X)
The oval cross section of straight plane, it is vertical with axle (Z).Although being shown as having circular cross section, but breather pipe (12) is permissible
There is oval cross section.For the purpose describing, term " hydrodynamic diameter " is defined as 4A/P, and wherein " A " is cross-sectional area
" P " is the wetted perimeter of cross section.Therefore, for the breather pipe (12) comprising circular cross section, hydrodynamic diameter (Dh) be only
The internal diameter of vial (12).Although not limiting, but the hydrodynamic diameter of breather pipe (12) being preferably 0.010 to 0.050m.Ventilation
The end (the 16th, 18) of pipe is preferably sealed.And in a preferred embodiment, breather pipe (the 12nd, 12 ', 12 ", 12 " ') have
Substantially the same length (L) and hydrodynamic diameter (Dh)。
Breather pipe (12) farther includes the excircle being limited by first paragraph circular arc (20) and second segment circular arc (22): first
Section circular arc is made up of the 30 ° of circular arcs being positioned at below (X) and divided equally Bei (Y) axle；Second segment circular arc is made up of 330 ° of circular arcs, and by carefully
Be divided into 22 sizes, 15 ° of sectors identical, nonoverlapping wherein four mentioned below, related to the embodiment of invention.
First paragraph circular arc (20) and second segment circular arc (22) be not overlapping.
In embodiment described in FIG, manifold (14) be positioned at breather pipe (the 12nd, 12 ', 12 ", 12 " ') end between
Central authorities, extend in vertical direction, i.e. prolong along trunnion axis (Y) in the shared horizontal plane up or down being limited by breather pipe grid
Stretch.Manifold (14) is in fluid communication with each breather pipe by air inlet (24).Although not display, but manifold also may be located at logical
Tracheae (the 12nd, 12 ', 12 ", 12 " ') one end (16) or two ends (the 16th, 18).
Breather pipe (12) includes separating along length (L) on four around second segment circular arc (22) or more diverse location
Multiple (N) discharge orifice of opening (the 26th, the 28th, the 30th, 32)；And arrange along multiple (M) that length (L) separates in first paragraph circular arc (20)
Water hole；This some holes is preferably oval, for example circular but it also may to use other shapes, such as polygon.
The quantity (N, M) of discharge orifice and osculum is not particularly limited, but N is preferably 10 to 100；M is preferably 2 to 20.
For purposes of description, the hole less than 1mm for the hydrodynamic diameter is ignored.In one preferred embodiment, discharge orifice and row
Water hole has the following characteristics that
I) minimum hydrodynamic diameter (dmin) it is equal to or more than 0.001m；
Ii) hydrodynamic diameter intermediate value (dmed) it is 0.001 to 0.01m, and more preferably 0.002 to 0.005m；With
Iii) maximum hydrodynamic diameter (dmax) it is equal to or less than 0.01m.
Additionally, the cross-sectional area of breather pipe (12) with the ratio of following total cross-sectional area is:
Iv) ratio of the total cross-sectional area with all discharge orifices (the 24th, the 26th, the 28th, 30) is more than 1, and preferably greater than 1.2；
V) ratio of the total cross-sectional area with all osculums is less than 1, and more preferably less than 0.5.
In one preferred embodiment, multiple (N) discharge orifices (the 26th, the 28th, the 30th, 32) are positioned at four nonoverlapping 15 °
Around second segment circular arc (22) in Shan Xing, wherein each comprising in this four sectors:
Vi) at least 10 minimum hydrodynamic diameter (dmin) be equal to or more than 0.001m discharge orifice；
Vii) it is equal to all discharge orifices in rice measurement, fan-shaped along the value (y) of the mean place of Y-axis；
Viii) it is equal to the interior quadruplicate value of all discharge orifices hydrodynamic diameter mean value (d) (F) rice measurement, fan-shaped.
Wherein any two be applicable to four sectors for the following relation:
Abs[1-Fi/Fii+2.6x108m-5N2(yii-yi)Fi)]≤0.5
Wherein " i " and " ii " refers to the higher and relatively low sector along Y-axis respectively.
Another preferred embodiment in, gaseous diffuser further meet as follows:
N2Abs(0.5-0.025(L/Dh))(dmax/Dh)4≤0.3
Operationally, gas-pressurized (such as air) is for example incorporated in manifold (14) by way of gas compressor etc.
(being represented by the arrow in Fig. 1), and by air inlet (24) distribution to breather pipe (the 12nd, 12 ', 12 ", 12 " ').Due to discharge orifice
The size of (the 26th, the 28th, the 30th, 32) and osculum (34) and the reason at interval, described gaseous diffuser (10) provides improved gas
Flow distribution so that in running, in the air velocity of single discharge orifice and breather pipe all discharge orifices air velocity in
Value difference is less than 20%, and more preferably less than 10%.In a preferred embodiment, in this air velocity and gas distributor
The air velocity intermediate value difference of all discharge orifices is less than 20%, and even 10%.This uniform gas between discharge orifice
Distribution (position with its size and in Y-axis is unrelated) causes more efficient and effective operation.
Have been described with many embodiments of the present invention, and in some instances, some embodiment, selection, model
Enclose, constitute or other features are depicted as " preferably ".For the description of " preferably " feature should not be construed in any way for
It is required, requisite and crucial for being considered as this feature to invention.Described scope includes end points.Each patent above-mentioned
The entire subject matter of file is incorporated herein by reference by crossing.
Claims (6)
1. gaseous diffuser (10), its breather pipe including separating in shared horizontal plane and be arranged parallel to each other is (the 12nd, 12 ',
12 ", 12 " ') grid, and the manifold (14) with described breather pipe fluid communication,
Its Center Vent tube (12) includes:
Between two end points (the 16th, 18), extend and define length L of axle Z,
Hydrodynamic diameter Dh,
Definition comprises the oval cross section of the perpendicular of vertical axes Y and the trunnion axis X passing crosswise center (C), itself and axle Z
Vertically,
The excircle being limited by first paragraph circular arc (20) and second segment circular arc (22): described first paragraph circular arc is by being positioned at below X-axis
And the 30 ° of circular arcs divided equally by Y-axis form, described second segment circular arc (22) is by 330 ° circular arc groups nonoverlapping with first paragraph circular arc
Become, and wherein said second segment circular arc (22) includes four nonoverlapping 15 ° of sectors；
Separating along length L on four around described second segment circular arc (22) in described sector or more diverse location
Multiple discharge orifices (the 26th, the 28th, the 30th, 32), and multiple osculums separating along length L in described first paragraph circular arc (20), its
Described in the number of multiple discharge orifices be N；
Each in described four sectors of wherein said second segment circular arc (22) comprises:
At least 10 minimum hydrodynamic diameter are equal to or more than the discharge orifice of 0.001m；
Be equal to rice measurement, in described sector all discharge orifices along value y of the mean place of Y-axis；With
It is equal to rice measurement, all discharge orifice hydrodynamic diameter mean values quadruplicate value F in described sector；
Wherein any two be applicable to described four sectors for the following relation:
Abs[1-Fi/Fii+2.6x108m-5N2(yii-yi)Fi]≦0.5
Wherein " i " and " ii " refers to the higher and relatively low sector along Y-axis respectively.
2. the gaseous diffuser described in claim 1, the cross-sectional area of wherein said breather pipe (12) is with all discharge orifices (the 26th,
28th, the 30th, 32) ratio of total cross-sectional area is more than 1.
3. the gaseous diffuser described in claim 1, the cross-sectional area of wherein said breather pipe (12) and all osculums (34)
Total cross-sectional area ratio be less than 1.
4. the gaseous diffuser described in claim 1, wherein the hydrodynamic diameter of all discharge orifices (the 26th, the 28th, the 30th, 32) more than or
Equal to 0.001m and less than or equal to 0.01m.
5. the gaseous diffuser described in claim 1, wherein the hydrodynamic diameter of all osculums (34) is more than or equal to
0.001m and be less than or equal to 0.01m.
6. the gaseous diffuser described in claim 1, wherein all discharge orifices have minimum hydrodynamic diameter and maximum hydrodynamic force
Diameter, and the ratio of described maximum hydrodynamic diameter and described minimum hydrodynamic diameter is less than 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261672309P | 2012-07-17 | 2012-07-17 | |
| US61/672,309 | 2012-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103537194A CN103537194A (en) | 2014-01-29 |
| CN103537194B true CN103537194B (en) | 2016-11-09 |
Family
ID=49961282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310308707.4A Active CN103537194B (en) | 2012-07-17 | 2013-07-17 | Gaseous diffuser |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US8894048B2 (en) |
| CN (1) | CN103537194B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9643146B2 (en) * | 2013-11-29 | 2017-05-09 | Uop Llc | Unit for processing a liquid/gas phase mixture, mercaptan oxidation system including the same, and method of processing a liquid/gas phase mixture |
| GB201501887D0 (en) * | 2015-02-05 | 2015-03-25 | Cellexus Ltd | Sparging apparatus |
| US11912600B2 (en) * | 2018-11-06 | 2024-02-27 | James Dartez | Mixer for ponds and other shallow bodies of water |
| US20210138219A1 (en) * | 2019-11-08 | 2021-05-13 | Global Life Sciences Solutions Usa Llc | Sparger device for a bioprocessing system and method of manufacturing a sparger device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3833003A1 (en) * | 1988-09-29 | 1990-04-12 | Rudolf Hoehne | Apparatus for introducing gas into liquids in large vessels |
| US6042090A (en) * | 1997-05-16 | 2000-03-28 | Sulzer Chemtech Ag | Distributor device for a column |
| CN2537444Y (en) * | 2002-04-04 | 2003-02-26 | 天津大学北洋化工设备开发中心 | Multiple cavity gas distributor |
| CN201999737U (en) * | 2010-12-13 | 2011-10-05 | 浙江嘉化工业园投资发展有限公司 | Chlorine gas distributor |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5248424A (en) | 1990-08-17 | 1993-09-28 | Zenon Environmental Inc. | Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate |
| TW255835B (en) | 1994-01-07 | 1995-09-01 | Kubota Kk | Filtration membrane module |
| JP4804599B2 (en) | 1996-12-20 | 2011-11-02 | シーメンス・ウォーター・テクノロジーズ・コーポレイション | Cleaning method |
| EP1043276B1 (en) | 1997-12-05 | 2004-04-21 | Mitsubishi Rayon Co., Ltd. | Apparatus and method for treating water |
| US6280626B1 (en) * | 1998-08-12 | 2001-08-28 | Mitsubishi Rayon Co., Ltd. | Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly |
| NO317340B1 (en) * | 2001-09-14 | 2004-10-11 | Oxseavision As | New oxygen oxygenation device |
| US6863817B2 (en) * | 2002-12-05 | 2005-03-08 | Zenon Environmental Inc. | Membrane bioreactor, process and aerator |
| US7044453B2 (en) * | 2004-01-08 | 2006-05-16 | Environmental Dynamics, Inc. | Membrane diffuser with uniform gas distribution |
| DE102004036634B4 (en) * | 2004-07-05 | 2006-04-20 | Invent Umwelt-Und Verfahrenstechnik Ag | Device for gassing liquids and method for mounting the device |
| US7622040B2 (en) * | 2006-06-30 | 2009-11-24 | Tekni-Plex, Inc. | Fine bubble airlift device |
| KR100778491B1 (en) * | 2006-12-29 | 2007-11-28 | 주식회사 케이엠에스 | Diffuser for aeration |
| CN101830555B (en) | 2009-03-09 | 2011-12-28 | 江西金达莱环保研发中心有限公司 | Jet aeration device and jet aeration method thereof |
| CN102481522B (en) | 2009-08-28 | 2014-09-24 | 陶氏环球技术有限责任公司 | Filtration module including membrane sheet with capillary channels |
| CN101893164B (en) | 2010-07-19 | 2013-03-06 | 中国航空工业集团公司西安飞机设计研究所 | Multi-branch small flow distribution method |
-
2013
- 2013-07-09 US US13/937,241 patent/US8894048B2/en active Active
- 2013-07-17 CN CN201310308707.4A patent/CN103537194B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3833003A1 (en) * | 1988-09-29 | 1990-04-12 | Rudolf Hoehne | Apparatus for introducing gas into liquids in large vessels |
| US6042090A (en) * | 1997-05-16 | 2000-03-28 | Sulzer Chemtech Ag | Distributor device for a column |
| CN2537444Y (en) * | 2002-04-04 | 2003-02-26 | 天津大学北洋化工设备开发中心 | Multiple cavity gas distributor |
| CN201999737U (en) * | 2010-12-13 | 2011-10-05 | 浙江嘉化工业园投资发展有限公司 | Chlorine gas distributor |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140191424A1 (en) | 2014-07-10 |
| CN103537194A (en) | 2014-01-29 |
| US8894048B2 (en) | 2014-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103537194B (en) | Gaseous diffuser | |
| US11148105B2 (en) | Microbubble generation device | |
| BR112014010267B1 (en) | distribution plate of a downward flowing liquid gas flow and its use | |
| CN102044184B (en) | Fluid flow curve observation experiment device | |
| CN204677976U (en) | Pipe flow speed device for limiting | |
| CN2583642Y (en) | Flow regulating apparatus for gas flow measuring probe unit | |
| RU98339U1 (en) | FILLER ELEMENT FOR NOZZLE COLUMNS | |
| CN205316760U (en) | Novel liquid separation head | |
| CN216725791U (en) | Novel high-efficient MVR system gas-liquid separation device | |
| AU2015200212A1 (en) | Distributor tray for gas/liquid exchange column with liquid deflector | |
| JP2013544645A (en) | Flue gas diffuser object | |
| CN205221416U (en) | Flowing back structure and sealed container who has this flowing back structure | |
| CN215373047U (en) | Electronic expansion valve and air conditioner | |
| CN208348016U (en) | Compressor outlet constant-current stabilizer | |
| CN201589474U (en) | Liquid separator and air conditioner set having the liquid separator | |
| CN103706211A (en) | Cyclone natural gas washing tank | |
| CN203443461U (en) | Air distributor of air cooler | |
| CN2745001Y (en) | Liquid separator of air conditioners | |
| CN206468403U (en) | Gs-oil separator | |
| CN204754414U (en) | Chimney inner tube | |
| CN104056838B (en) | Negative pressure air drafting hood | |
| CN104344607A (en) | Heat exchanger | |
| CN203972442U (en) | A kind of negative-pressure air-suction cover | |
| CN210752710U (en) | Multilateral honeycomb type ceramic plastic filler | |
| CN203419854U (en) | Gas plane uniform distributor for plate glass coating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Delaware Patentee after: DDP special electronic materials USA Co.,Ltd. Address before: Delaware Patentee before: DDP special electronic materials American Co. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230406 Address after: Delaware Patentee after: THE DOW CHEMICAL Co. Address before: Michigan, USA Patentee before: Dow Global Technologies Llc Effective date of registration: 20230406 Address after: Delaware Patentee after: DDP special electronic materials American Co. Address before: Delaware Patentee before: THE DOW CHEMICAL Co. |